You will still be 2nd class melee DD in which case you would better to go with real melee DD. BLU is best in a lowman (and solo even more) situations where you need everything at once AoEsleep/healing/damage/stun/etc.. When you trying to make pure melee out of him then it wont work ( at least outside abyssea ). On the other hand I am not sure which subjob could be best for above purpose but even /nin for shadows should be better or maybe /dnc to dont waste mp on cures.
Really if you found yourself in a situation where you have marches, healers, rolls and its not worth to casting outside of maybe QC then you would do better on pure melee job instead of trying to accommodate BLU for this.
Ofc situation can change and they might add some spells for BLU that will be so useful to have that it will be wanted in large party and then depends of your role you could end up in melee party with marches and maybe rolls and end up focusing on melee because you are already there. I cant find a situation like this for now tho, so for now in lowman events when BLU might be most useful its better to focus on spells and managing your mp and /war wont help you do it because you will lose more damage, by curing yourself instead of spamming delta thrust, than you will get from /war.
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