Zanaikin wrote:adding your level means pretty much on par with 'all good saves' however its the fact wherever you take lvls in a class... you get a 'class bonus' to saves. So if you crossclass like hell you rack up a lot of those bonuses, and with the talent tree system being extremely flexible you never have to take all 10/20 levels of something to gain the ability you wanted from said class. Put this together and its like asking every char above lvl15 to have levels in 5+ diff classes.
The simple solution in terms of saves is to have the bonuses overlap rather than stacking. Call them all "competence bonus" or something.
As for the talent trees... Perhaps some more heavy-handed work with prereqs and stages. Most of the time, each feat tree has one ability that's lame but is a prerequisite for all the tree's other abilities. Then you've got lesser and greater forms of the same ability (evasion vs. improved evasion, for example). And remember how they also mentioned tome of battle and unique recharge conditions for special abilities*? I imagine each tree (or each class) would have its own condition. This would rather discourage cherry-picking.
*For a less extreme version of ToB recharge conditions, see Psionic Focus. For a more extreme version, see Iron Heroes by Mike Mearls.