Currently, suggested phrases are fairly long. e.g. form SuggestTest with nodes containing in 2015 my fox is red, like mike's fox and john's fox and in 2015 a red fox is still a fox a suggest query for in 201 the result would contain 2 suggestions (both the phrase independently).
We should probably allow passing suggestion field thorough analyzer so that word level suggestions are possible. Moreover, that would also for suggestion to be available from middle of phrases e.g. suggestions for ite should give suggestion as item which, in turn, can search documents containing this is the most important item in the whole agenda.