What is the best strategy for the bye rounds this year? Do we need to account for them with our starting squad? Or is the best strategy actually to have no set approach at all?
In 2013, the bye rounds were across Rounds 11-13. In 2014, they will be earlier, occurring across Round 8-10. Here is a breakdown of the clubs and their byes in 2014:

The rules for SuperCoach change specifically for the bye rounds. These rules haven't changed since last year.
Instead of scoring all 22 players from the on-field 6 defenders, 8 midfielders, 2 rucks and 6 forwards, only your best 18 scoring players from any of the 22 on-field positions will count.
If your Captain's doubled score is not in your best 18 scores, then you won't get this player's score AND you won't automatically get the Vice-Captain's (doubled) score. However, if your Captain does not play at all, then the VC is doubled (as usual).
During the rolling lockout, substitution and trading of players with byes can occur at any time prior to the full lockout (i.e. the start of the final match of the round).
During the bye rounds, 3 trades are allowed instead of the 2-trade limit for the remaining 20 regular rounds of the season.

I've spent several weeks playing around with my SC team, but I'm starting to finalise most of the non-rookies and even some of the rookies. So I decided to add up the number of byes that I had from each of the three rounds.
I was pleasantly surprised to find that my bye structure was 9-10-11 (meaning 9 players with the bye in Round 8, and so on for R9 and R10). For the moment, let's assume that any trades I make before Round 8 keep the same structure of byes.
At the start of Round 8 I reckon I could expect to have 9 bye players and probably up to 2 non-playing bench players (most likely to be rucks), but should still be able to find 18 starters.
After Round 8, I could trade up to 3 of the players who have a bye in Round 9 to bring in up to 3 players who just had their bye in Round 8. This would leave me with only 7 bye players and again perhaps a few non-playing bench players. Should still be able to find 18 starters though.
Similarly, after Round 9 I could trade up to 3 of the players who have a bye in Round 10 for players who have already had their bye (in either Round 8 or 9) but still find enough starters to get to 18.

I think it is somewhat important to plan for the bye rounds with your starting squad. The level of importance though should not be overstated, because there will obviously be some trades made by the time Round 8 arrives. You should still be picking the best value players on each line in general, but keeping an eye to not go overboard with players from teams that share a bye.
Perhaps the best way to look at it is to aim for a reasonably balanced bye structure for your initial squad and then keep an eye on how that balance is affected by your early trades. If those early trades end up throwing your bye structure out too far in any individual round however, that will mean some doughnut action and should be avoided!

PS Last year, Too Serious has a feature which allows you to quickly check your Bye Profile. Currently, this is not functional however (it is part of the My Teams tab, which has been disabled for the moment). Hopefully it will come back in the near future. Watch this space.