Learning/exploring and knowing how to deal with different situations dose matter to me and should do to any martial artrist.
In that case this is the best piece of advice I can give you. If you want to beat a grappler, you need to learn to grapple. Simple. BJJers train in a different way, with a different mindset and with different goals to most Aikidoka. The result is in a true application they are likely to have more functional tools availible to them. Or it may be better to say their tools have become more functionalised.